Nilfisk-ALTO American 12 - Manual (Page 28)

Chatter Wave Prevention (cont)
3) UNEVEN WALKING PACE..... can leave lengthy “waves”. The machine cuts more material during
the slower pace. Pay particular attention to a steady, even pace.
4) EXCESSIVE LIGHT CUTS.... may reveal high spots on the paper/contact wheel and cause chatter.
Take a heavier cut and increase the pace.
5) DEBRIS.... lodged between the paper and the drum will leave chatter. On a belt sander, debris may
be adhered to the drum. Insure the drum is clean and free of debris before placing the paper on.
6) SANDER PAPER QUALITY....may vary. Belt seams can be thicker on low quality paper and cause
chatter. Use only American Sanders Technology specified sandpaper.
PROPER CARE OF YOUR MACHINE CAN MINIMIZE CHATTER AND WAVES.
1) V-BELTS.... can cause vibration and chatter if they are of low quality. Use only belts specified by
American Sanders Technology.
2) TRUCK AND CASTER WHEELS....with flat spots, out-of-roundness, or debris adhered to their surface
can cause “waves” or a “chatter effect”. Always clean and inspect all wheels before starting to sand,
and before the finish cut. Replace or true the wheels if found to be out-of-round.
3) DUST PICK-UP SHOES.......may need adjusted differently for different materials that are to be
sanded. An improperly adjusted shoe will leave trailing debris that will be run over by the wheels and
cause “random waves”.
4) CONTACT WHEELS (DRUMS).......may be out-of-round and cause “chatter”. Contact your Ameri-
can Sanders Technology dealer for assistance to true or replace the drum.
5) BEARINGS......in the motor, drum, or fan system may become worn and induce vibration which could
cause “chatter”.
6) PULLEYS.....that are damaged or severly worn can induce vibration and cause “chatter”. Contact
your American Sanders Technology dealer for assistance.
American Sanders Technology is not responsibile for rework of floors that are unacceptable to
the customer. It is your responsibility to insure your equipment is in proper operating order, and
that you use the right machine for the job.